I Have A Lot Of Discomfort In The Back Of

I have a lot of discomfort in the back of my mouth and on the sides of my tongue. I had a tooth extraction done and I was prescribed 0000 NOVAMOXIN 500MG Capsule. The pain gets worst in the middle of the night that the pain wakes me up. When I wake up my throat feels extremely dry and my tongue feels as if I someone is pulling my tongue out.